:root {
  --bg: #08090c;
  --bg-2: #0f1116;
  --bg-3: #151820;
  --panel: #161922;
  --panel-2: #1e222c;
  --rule: #2a2f3a;
  --rule-2: #3a4050;
  --ink: #e8ecf1;
  --ink-2: #9aa3b2;
  --faint: #5b6270;
  --cyan: #00e5ff;
  --cyan-dim: #00a3b3;
  --cyan-glow: rgba(0, 229, 255, 0.12);
  --orange: #ff9f1c;
  --green: #2ecc71;
  --danger: #ff3864;
  --red: #ff3864;
  --gold: #f1c40f;
  --font-display: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  --font-body: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

.sandbox-page { min-height: 100vh; overflow: auto; }
.sandbox-page main { min-height: calc(100vh - 80px); background: linear-gradient(180deg, rgba(8,9,12,.95) 0%, rgba(8,9,12,.82) 100%), url('/art/receiving-district-keyart-v1.png') center/cover no-repeat; }
.sandbox-skip { position: absolute; top: -4rem; left: 1rem; z-index: 20; background: var(--amber); color: #111; padding: 0.6rem; }
.sandbox-skip:focus { top: 1rem; }
.sandbox-workspace { width: min(1180px, calc(100% - 2rem)); margin: 1.5rem auto; display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr); gap: 1rem; }
.sandbox-workspace[hidden], .sandbox-locked[hidden] { display: none; }
.sandbox-workspace .stage-wrap { min-height: 360px; min-width: 0; }
.sandbox-workspace canvas { width: 100%; height: auto; max-width: 100%; min-width: 0; }
.sandbox-workspace .editor-card { min-width: 0; }
.sandbox-workspace select { width: 100%; margin: 0.4rem 0 0.8rem; padding: 0.5rem; background: #071012; color: var(--ink); border: 1px solid var(--faint); }
.sandbox-controls { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.sandbox-controls button { border: 1px solid var(--cyan); background: transparent; color: var(--ink); padding: 0.55rem 0.75rem; }
.sandbox-locked { width: min(620px, calc(100% - 2rem)); margin: 4rem auto; border: 1px solid var(--amber); padding: 2rem; background: var(--panel); }
@media (max-width: 760px) { .sandbox-workspace { display: flex; flex-direction: column; } .sandbox-workspace .stage-wrap, .sandbox-workspace .editor-card { width: 100%; } }

* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; }
body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.5;
}

.game-shell {
  display: flex;
  flex-direction: column;
  height: 100vh;
  margin: 0 auto;
}

.game-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.3rem 0.9rem;
  background:
    linear-gradient(180deg, rgba(0, 229, 255, 0.04) 0%, transparent 100%),
    var(--bg-2);
  border-bottom: 1px solid var(--rule);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.35);
  flex-shrink: 0;
  flex-wrap: wrap;
}
.logo {
  font-family: var(--font-display);
  font-size: 1.5rem;
  color: var(--cyan);
  line-height: 1;
  text-shadow: 0 0 18px rgba(0, 229, 255, 0.25);
}
.logo small {
  display: block;
  font-family: var(--font-body);
  font-size: 0.45rem;
  letter-spacing: 0.34em;
  text-transform: uppercase;
  color: var(--orange);
  margin-bottom: 0.15rem;
}
.level-info {
  display: flex;
  gap: 0.6rem;
  align-items: center;
  font-family: var(--font-display);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.level-info::before {
  content: '▸';
  color: var(--cyan);
  opacity: 0.6;
}
.district {
  color: var(--ink-2);
  background: rgba(255, 159, 28, 0.08);
  border: 1px solid rgba(255, 159, 28, 0.25);
  padding: 0.25rem 0.55rem;
  border-radius: 999px;
}
.quest {
  color: var(--cyan);
  background: var(--cyan-glow);
  border: 1px solid rgba(0, 229, 255, 0.22);
  padding: 0.25rem 0.55rem;
  border-radius: 999px;
}
.mission-progress {
  color: var(--faint);
  font-family: var(--font-display);
  font-size: 0.65rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 0.25rem 0.55rem;
  border: 1px solid var(--rule);
  border-radius: 999px;
}
.header-nav {
  display: flex;
  align-items: center;
  gap: 0.8rem;
}
.sync-indicator {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-family: var(--font-display);
  font-size: 0.6rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--faint);
}
.sync-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--faint);
}
.sync-indicator.synced .sync-dot { background: var(--green); box-shadow: 0 0 8px rgba(46, 204, 113, 0.35); }
.sync-indicator.pending .sync-dot { background: var(--orange); animation: pulse 1.5s infinite; }
@keyframes pulse { 0%, 100% { opacity: 0.5; } 50% { opacity: 1; } }
.levels-btn {
  font-family: var(--font-display);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.4rem 0.9rem;
  background: var(--panel);
  border: 1px solid var(--rule);
  color: var(--ink);
  cursor: pointer;
  border-radius: 4px;
  transition: 0.15s ease;
}
.levels-btn:hover {
  border-color: var(--cyan);
  color: var(--cyan);
  background: rgba(0, 229, 255, 0.06);
  box-shadow: 0 0 12px rgba(0, 229, 255, 0.12);
}
.back {
  color: var(--ink-2);
  font-size: 0.85rem;
  text-decoration: none;
  padding: 0.4rem 0.6rem;
  border-radius: 4px;
  transition: 0.15s ease;
}
.back:hover { color: var(--cyan); background: rgba(0, 229, 255, 0.05); }
.sound-toggle {
  background: transparent;
  border: 1px solid var(--rule);
  border-radius: 4px;
  color: var(--ink-2);
  cursor: pointer;
  font-size: 1rem;
  line-height: 1;
  padding: 0.35rem 0.5rem;
  transition: 0.15s ease;
}
.sound-toggle:hover { border-color: var(--cyan); color: var(--cyan); }
.sound-toggle[aria-pressed="true"] { border-color: var(--cyan); background: rgba(0, 229, 255, 0.08); }

.game-main {
  display: grid;
  grid-template-columns: minmax(360px, 520px) minmax(0, 1fr);
  grid-template-areas: "terminal stage";
  gap: 0;
  background: var(--bg);
  flex: 1;
  min-height: 0;
  position: relative;
}
.loading-overlay {
  position: absolute;
  inset: 0;
  z-index: 50;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  background: rgba(5, 6, 8, 0.92);
  color: var(--cyan);
  font-family: var(--font-display);
  font-size: 0.85rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.loading-overlay[hidden] { display: none; }
.loading-spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--rule);
  border-top-color: var(--cyan);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
.stage-wrap {
  grid-area: stage;
  position: relative;
  background:
    radial-gradient(ellipse at center, rgba(5,6,8,0.45) 0%, rgba(5,6,8,0.88) 100%),
    url('/art/receiving-district-keyart-v1.png') center/cover no-repeat;
  min-height: 0;
  overflow: hidden;
  border-left: 1px solid var(--rule);
}
#stage {
  display: block;
  width: 100%;
  height: 100%;
}
.overlay {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at center, rgba(0,0,0,0) 45%, rgba(0,0,0,0.55) 100%),
    repeating-linear-gradient(
      0deg,
      rgba(0, 0, 0, 0.22) 0 1px,
      transparent 1px 3px
    );
  pointer-events: none;
  opacity: 0.55;
  animation: scanFlicker 6s infinite;
}
.overlay::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    0deg,
    transparent 0%,
    rgba(0, 229, 255, 0.04) 50%,
    transparent 100%
  );
  background-size: 100% 8px;
  animation: scanMove 4s linear infinite;
  pointer-events: none;
}
@keyframes scanFlicker {
  0%, 100% { opacity: 0.75; }
  50% { opacity: 0.72; }
  52% { opacity: 0.76; }
  54% { opacity: 0.73; }
}
@keyframes scanMove {
  0% { transform: translateY(-100%); }
  100% { transform: translateY(100vh); }
}
.stage-wrap::before {
  content: '';
  position: absolute;
  inset: 0;
  border: 2px solid #050608;
  border-radius: 4px;
  box-shadow:
    inset 0 0 40px rgba(0, 0, 0, 0.6),
    inset 0 0 8px rgba(0, 229, 255, 0.06);
  pointer-events: none;
  z-index: 5;
}
.stage-wrap::after {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at center, rgba(0,0,0,0) 55%, rgba(0,0,0,0.35) 100%);
  pointer-events: none;
  z-index: 6;
}
.stage-tooltip {
  position: absolute;
  z-index: 20;
  pointer-events: none;
  background: rgba(11, 13, 16, 0.95);
  border: 1px solid var(--cyan);
  border-radius: 6px;
  padding: 0.35rem 0.6rem;
  font-family: var(--font-display);
  font-size: 0.72rem;
  color: var(--cyan);
  white-space: nowrap;
  opacity: 0;
  transform: translateY(4px);
  transition: opacity 0.15s ease, transform 0.15s ease;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.4);
}
.stage-tooltip.show {
  opacity: 1;
  transform: translateY(0);
}

.terminal-wrap {
  grid-area: terminal;
  display: flex;
  flex-direction: column;
  background:
    linear-gradient(0deg, rgba(0, 229, 255, 0.015) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 229, 255, 0.015) 1px, transparent 1px),
    var(--bg-2);
  background-size: 24px 24px, 24px 24px, 100% 100%;
  min-height: 0;
  overflow-y: auto;
}

.goal-strip {
  display: flex;
  align-items: flex-start;
  gap: 0.7rem;
  padding: 0.7rem 1rem 0.5rem;
  flex-shrink: 0;
}
.goal-strip .goal-label {
  font-family: var(--font-display);
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--orange);
  background: rgba(255, 159, 28, 0.08);
  border: 1px solid rgba(255, 159, 28, 0.25);
  white-space: nowrap;
  padding: 0.25rem 0.5rem;
  border-radius: 4px;
  margin-top: 0.15rem;
}
.goal-strip p {
  margin: 0;
  color: var(--ink);
  font-size: 1.05rem;
  line-height: 1.35;
}

.editor-card {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 0;
  padding: 0.5rem 1rem 0.9rem;
  gap: 0.75rem;
}

.mission-panel {
  border: 1px solid var(--cyan);
  background: rgba(4, 28, 31, 0.94);
  padding: 1rem 1.1rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}
.mission-panel[hidden], .mission-panel [hidden] { display: none; }
.mission-panel h2 { margin: 0.15rem 0 0.55rem; font-size: 1.05rem; color: var(--ink); }
.mission-panel p { margin: 0.55rem 0; }
.mission-kicker { color: var(--cyan); font-size: 0.7rem; letter-spacing: 0.08em; text-transform: uppercase; }
.mission-notebook { display: flex; flex-direction: column; gap: 0.85rem; }
.nb-cell {
  background: rgba(7, 16, 18, 0.7);
  border: 1px solid var(--rule);
  border-radius: 6px;
  padding: 0.9rem 1rem;
  position: relative;
}
.nb-cell-text {
  background: transparent;
  border: none;
  padding: 0.3rem 0;
}
.nb-cell-code { padding-bottom: 0.9rem; }
.nb-cell-quiz { display: flex; flex-direction: column; gap: 0.4rem; }
.nb-cell-quiz strong { color: var(--orange); font-size: 0.8rem; letter-spacing: 0.04em; text-transform: uppercase; }
.nb-text { line-height: 1.65; color: var(--ink-2); font-size: 0.95rem; }
.nb-text p { margin: 0.75rem 0; }
.nb-text p:first-child { margin-top: 0; }
.nb-text p:last-child { margin-bottom: 0; }
.nb-text strong { color: var(--ink); }
.nb-repair-lead { margin-bottom: 0.5rem; color: var(--ink); }
.nb-text code {
  background: rgba(0, 229, 255, 0.1);
  color: var(--cyan);
  padding: 0.15rem 0.4rem;
  border-radius: 3px;
  font-family: var(--font-display);
  font-size: 0.9em;
}
.nb-text code {
  background: rgba(0, 229, 255, 0.08);
  color: var(--cyan);
  padding: 0.1rem 0.35rem;
  border-radius: 3px;
  font-family: var(--font-display);
}
.nb-code {
  width: 100%;
  min-height: 5rem;
  max-height: 12rem;
  overflow: auto;
  background: #05090a;
  color: var(--ink);
  border: 1px solid var(--rule);
  border-radius: 4px;
  padding: 0.6rem 0.75rem;
  font-family: var(--font-display);
  font-size: 0.92rem;
  line-height: 1.55;
  white-space: pre-wrap;
  word-break: break-all;
  margin: 0.25rem 0 0.5rem;
}
.nb-execution-count {
  font-size: 0.75rem;
  color: var(--faint);
  font-family: var(--font-display);
  margin-bottom: 0.35rem;
}
.mission-actions .nb-run, .nb-run {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  margin-top: 0;
  background: var(--cyan);
  color: #000;
  border: none;
  padding: 0.45rem 0.85rem;
  border-radius: 4px;
  cursor: pointer;
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  transition: 0.15s ease;
}
.mission-actions .nb-run:hover, .nb-run:hover { background: #7ff8ff; box-shadow: 0 0 14px rgba(0, 229, 255, 0.35); }
.nb-output {
  margin-top: 0.6rem;
  padding: 0.55rem 0.75rem;
  background: #05090a;
  border-left: 3px solid var(--cyan);
  border-radius: 0 4px 4px 0;
  min-height: 1.5rem;
  white-space: pre-wrap;
  font-family: var(--font-display);
  font-size: 0.85rem;
  color: var(--ink-2);
}
.nb-output:empty { display: none; }
.nb-prediction-label {
  font-size: 0.85rem;
  color: var(--ink-2);
}
.nb-prediction-input {
  width: 100%;
  border: 1px solid var(--rule);
  background: #05090a;
  color: var(--ink);
  padding: 0.5rem 0.65rem;
  border-radius: 4px;
  font-family: var(--font-display);
  font-size: 0.9rem;
}
.nb-prediction-input:focus-visible { outline: 2px solid var(--cyan); outline-offset: 2px; }
.nb-prediction-submit {
  align-self: flex-start;
  background: var(--orange);
  color: #000;
  border: none;
  padding: 0.45rem 0.85rem;
  border-radius: 4px;
  cursor: pointer;
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  transition: 0.15s ease;
}
.nb-prediction-submit:hover { background: #ffb347; }
.nb-prediction-feedback { min-height: 1.5em; color: var(--amber); margin: 0.25rem 0 0; }
.nb-toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin-top: 0.6rem;
  padding-top: 0.6rem;
  border-top: 1px solid var(--rule);
}
.mission-actions .nb-toolbar-btn, .nb-toolbar-btn {
  border: 1px solid var(--rule-2);
  background: transparent;
  color: var(--ink-2);
  padding: 0.4rem 0.65rem;
  border-radius: 4px;
  cursor: pointer;
  font-family: var(--font-display);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  transition: 0.15s ease;
}
.mission-actions .nb-toolbar-btn:hover, .nb-toolbar-btn:hover { border-color: var(--cyan); color: var(--cyan); background: rgba(0, 229, 255, 0.06); }
.mission-actions .nb-toolbar-btn:focus-visible, .nb-toolbar-btn:focus-visible { outline: 2px solid var(--cyan); outline-offset: 2px; }
.mission-actions button:focus-visible, #prediction-submit:focus-visible, #prediction-input:focus-visible { outline: 3px solid var(--amber); outline-offset: 2px; }
#mission-feedback { min-height: 1.5em; color: var(--amber); }
.mission-code { width: 100%; min-height: 12rem; resize: vertical; border: 1px solid var(--faint); background: #05090a; color: var(--ink); padding: 0.8rem; font: 0.92rem/1.55 "JetBrains Mono", "Courier New", monospace; tab-size: 4; }
.mission-code:focus-visible { outline: 3px solid var(--amber); outline-offset: 2px; }
.editor-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-shrink: 0;
}
.file-tab {
  font-family: var(--font-display);
  font-size: 0.78rem;
  color: var(--ink-2);
  background: var(--bg-3);
  border: 1px solid var(--rule);
  border-bottom: none;
  border-radius: 6px 6px 0 0;
  padding: 0.5rem 1rem;
}
.run-btn {
  font-family: var(--font-display);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.55rem 1.1rem;
  background: var(--cyan);
  color: #000;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  transition: 0.15s ease;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  box-shadow: 0 0 0 rgba(0, 229, 255, 0);
  animation: runPulse 2.5s infinite;
}
.run-btn:hover { background: #7ff8ff; box-shadow: 0 0 18px rgba(0, 229, 255, 0.45); }
.run-btn:disabled { opacity: 0.5; cursor: wait; animation: none; }
.editor-actions { display: flex; align-items: center; gap: 0.5rem; }
.editor-action-btn {
  padding: 0.35rem 0.65rem;
  background: transparent;
  border: 1px solid var(--rule-2);
  border-radius: 4px;
  color: var(--faint);
  font-family: var(--font-display);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  cursor: pointer;
  transition: 0.15s ease;
}
.editor-action-btn:hover { border-color: var(--cyan); color: var(--cyan); background: rgba(0, 229, 255, 0.06); }
.editor-action-btn:focus-visible { outline: 2px solid var(--cyan); outline-offset: 2px; }
@keyframes runPulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(0, 229, 255, 0.35); }
  50% { box-shadow: 0 0 0 8px rgba(0, 229, 255, 0); }
}

.editor {
  position: relative;
  background: #0b0d10;
  border: 1px solid var(--rule-2);
  border-radius: 0 6px 6px 6px;
  padding: 0.85rem 0.9rem 0.85rem 2.8rem;
  font-family: var(--font-display);
  font-size: 1rem;
  line-height: 1.65;
  flex: 1;
  min-height: 0;
  overflow-y: auto;
}
.line-numbers {
  position: absolute;
  left: 0;
  top: 0.85rem;
  bottom: 0.85rem;
  width: 2.2rem;
  text-align: right;
  padding-right: 0.5rem;
  color: var(--faint);
  font-family: var(--font-display);
  font-size: 1rem;
  line-height: 1.65;
  user-select: none;
  border-right: 1px solid var(--rule);
}
.editor pre {
  margin: 0;
  white-space: pre-wrap;
  word-break: break-all;
}
.editor code { color: var(--ink); }
.editor .comment { color: var(--faint); }
.editor .fn { color: var(--cyan); }
.editor .str { color: #7ee787; }
.editor .kw { color: #ff7b72; }
.editor .num { color: #79c0ff; }
.editor .op { color: #d2a8ff; }
.blank-target {
  display: inline-block;
  min-width: 5ch;
  text-align: center;
  border-bottom: 1px dashed var(--cyan);
  color: var(--cyan);
}
.code-input {
  position: absolute;
  height: 1.55em;
  min-width: 110px;
  background: transparent;
  border: none;
  border-bottom: 2px solid var(--cyan);
  border-radius: 0;
  color: var(--cyan);
  font-family: var(--font-display);
  font-size: 1.05rem;
  padding: 0 0.2rem;
  outline: none;
  caret-color: var(--cyan);
  transition: 0.15s ease;
}
.code-input:hover {
  background: rgba(0, 229, 255, 0.04);
}
.code-input::placeholder {
  color: transparent;
}
.code-input:focus {
  background: rgba(0, 229, 255, 0.06);
  border-bottom-color: #7ff8ff;
  box-shadow: 0 0 12px rgba(0, 229, 255, 0.15);
}

.output {
  min-height: 40px;
  padding: 0.45rem 0.75rem 0.45rem 2rem;
  background: #0b0d10;
  border: 1px solid var(--rule);
  border-radius: 6px;
  font-family: var(--font-display);
  font-size: 0.84rem;
  color: var(--ink-2);
  white-space: pre-wrap;
  flex-shrink: 0;
  position: relative;
}
.output::before {
  content: '>';
  position: absolute;
  left: 0.75rem;
  top: 0.45rem;
  color: var(--faint);
  font-weight: 700;
}
.output:empty::before {
  content: '>';
  color: var(--faint);
}
.output:empty::after {
  content: 'Output will appear here...';
  color: var(--faint);
}
.output.success {
  border-color: rgba(46, 204, 113, 0.5);
  color: var(--green);
  background: rgba(46, 204, 113, 0.06);
}
.output.success::before { content: '✓'; color: var(--green); }
.output.error {
  border-color: rgba(255, 56, 100, 0.5);
  color: var(--danger);
  background: rgba(255, 56, 100, 0.06);
}
.output.error::before { content: '✕'; color: var(--danger); }

.hint-line {
  flex-shrink: 0;
  font-size: 0.86rem;
  color: var(--ink-2);
  line-height: 1.4;
  padding: 0.5rem 0.75rem;
  background: linear-gradient(90deg, rgba(0, 229, 255, 0.06) 0%, rgba(0, 229, 255, 0.02) 100%);
  border: 1px solid rgba(0, 229, 255, 0.15);
  border-radius: 6px;
}
.hint-line strong {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  color: var(--cyan);
  font-family: var(--font-display);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-right: 0.4rem;
}
.hint-line strong::before {
  content: '💡';
  font-size: 0.85rem;
}

.dialogue-card {
  position: absolute;
  left: 0.8rem;
  bottom: 0.8rem;
  right: auto;
  max-width: 420px;
  display: flex;
  gap: 0.75rem;
  align-items: flex-start;
  background: rgba(11, 13, 16, 0.94);
  border: 1px solid var(--rule);
  border-color: rgba(255, 159, 28, 0.55);
  border-radius: 8px;
  padding: 0.7rem 0.85rem;
  backdrop-filter: blur(6px);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.45), 0 0 20px rgba(255, 159, 28, 0.06);
  z-index: 10;
  cursor: pointer;
  transition: opacity 0.2s ease, transform 0.2s ease;
  animation: dialogueSlide 0.35s ease-out;
}
@keyframes dialogueSlide {
  from { transform: translateY(12px); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}
.dialogue-card:hover {
  border-color: var(--rule-2);
  border-left-color: var(--orange);
  transform: translateY(-2px);
}
.dialogue-dismiss {
  margin-left: auto;
  color: var(--faint);
  font-size: 1.1rem;
  line-height: 1;
  padding-left: 0.4rem;
  transition: 0.15s ease;
}
.dialogue-card:hover .dialogue-dismiss { color: var(--orange); }
.dialogue-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 2px solid var(--orange);
  flex-shrink: 0;
  image-rendering: pixelated;
  box-shadow: 0 0 12px rgba(255, 159, 28, 0.15);
}
.dialogue-card h3 {
  margin: 0 0 0.15rem;
  font-family: var(--font-display);
  font-size: 0.75rem;
  color: var(--orange);
}
.dialogue-card p {
  margin: 0;
  font-size: 0.88rem;
  color: var(--ink-2);
  line-height: 1.45;
}

.win-modal {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 200;
  opacity: 0;
  pointer-events: none;
  transition: 0.25s ease;
}
.win-modal.show {
  opacity: 1;
  pointer-events: auto;
}
.win-modal.show .win-box {
  animation: winPop 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}
@keyframes winPop {
  0% { transform: scale(0.85); opacity: 0; }
  100% { transform: scale(1); opacity: 1; }
}
.win-box {
  background: var(--panel);
  border: 1px solid var(--cyan);
  border-radius: 10px;
  padding: 2.2rem 2rem 2rem;
  text-align: center;
  box-shadow: 0 0 70px rgba(0, 229, 255, 0.35), inset 0 0 24px rgba(0, 229, 255, 0.06);
  max-width: 440px;
  position: relative;
}
.win-box::before {
  content: '★';
  position: absolute;
  top: -22px;
  left: 50%;
  transform: translateX(-50%);
  width: 46px;
  height: 46px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--panel);
  border: 1px solid var(--cyan);
  border-radius: 50%;
  color: var(--cyan);
  font-size: 1.4rem;
  box-shadow: 0 0 20px rgba(0, 229, 255, 0.3);
}
.win-box h2 {
  margin: 0.8rem 0 0.5rem;
  font-family: var(--font-display);
  color: var(--cyan);
}
.win-box p { margin: 0 0 1.5rem; color: var(--ink-2); }
.win-rank { margin: 0 !important; color: var(--orange) !important; font: 700 .68rem var(--font-display); letter-spacing: .14em; text-transform: uppercase; }
.win-reward { display: block; margin: -0.5rem 0 1.5rem; padding: .75rem; border-top: 1px solid var(--rule); border-bottom: 1px solid var(--rule); color: var(--orange); font: 800 1rem var(--font-display); }
.win-next {
  margin: 0 0 1.5rem;
  padding: 1rem 1.1rem;
  text-align: left;
  background: color-mix(in srgb, var(--cyan) 8%, var(--panel));
  border: 1px solid color-mix(in srgb, var(--cyan) 35%, var(--rule));
  border-radius: 6px;
}
.win-next[hidden] { display: none; }
.win-next-label {
  display: block;
  margin-bottom: .4rem;
  color: var(--cyan);
  font: 700 .64rem var(--font-display);
  letter-spacing: .13em;
  text-transform: uppercase;
}
.win-next strong { display: inline; color: var(--ink); font: 800 1rem var(--font-display); }
.win-next-concept { margin-left: .5rem; color: var(--orange); font: 700 .72rem var(--font-display); }
.win-next p { margin: .55rem 0 0; color: var(--ink-2); font-size: .84rem; line-height: 1.45; }
.win-actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}
.win-actions a {
  display: inline-block;
  padding: 0.55rem 1rem;
  background: var(--cyan);
  color: #000;
  text-decoration: none;
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border-radius: 4px;
  transition: 0.15s ease;
}
.win-actions a:hover { background: #7ff8ff; }
.win-actions a.secondary {
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--rule-2);
}
.win-actions a.secondary:hover { border-color: var(--cyan); color: var(--cyan); background: transparent; }

.level-select-modal {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.8);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 200;
  opacity: 0;
  pointer-events: none;
  transition: 0.25s ease;
}
.level-select-modal.show {
  opacity: 1;
  pointer-events: auto;
}
.level-select-box {
  background: linear-gradient(140deg, var(--panel), #090c11), url('/art/receiving-district-keyart-v1.png') center/cover no-repeat;
  border: 1px solid var(--cyan);
  border-radius: 8px;
  padding: 1.5rem;
  width: min(90%, 460px);
  max-height: min(90vh, 640px);
  display: flex;
  flex-direction: column;
  box-shadow: 0 0 50px rgba(0, 229, 255, 0.22);
}
.level-select-box h2 {
  margin: 0 0 0.35rem;
  font-family: var(--font-display);
  color: var(--cyan);
  text-shadow: 0 0 14px rgba(0, 229, 255, 0.2);
}
.level-select-meta {
  font-size: 0.8rem;
  color: var(--ink-2);
  margin-bottom: 0.75rem;
}
.level-search {
  width: 100%;
  padding: 0.55rem 0.75rem;
  margin-bottom: 0.9rem;
  background: var(--bg-2);
  border: 1px solid var(--rule);
  border-radius: 6px;
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 0.9rem;
  outline: none;
}
.level-search:focus {
  border-color: var(--cyan);
  box-shadow: 0 0 12px rgba(0, 229, 255, 0.12);
}
.level-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-bottom: 1rem;
  overflow-y: auto;
  padding-right: 0.25rem;
}
.level-group-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0 0.4rem 0.35rem;
  border-bottom: 1px solid var(--rule);
  margin-bottom: 0.35rem;
}
.level-group-title {
  font-family: var(--font-display);
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--orange);
}
.level-group-progress {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  font-family: var(--font-display);
  font-size: 0.65rem;
  color: var(--ink-2);
}
.level-group-progress-track {
  width: 48px;
  height: 6px;
  background: var(--rule);
  border-radius: 3px;
  overflow: hidden;
}
.level-group-progress-fill {
  display: block;
  height: 100%;
  width: 100%;
  transform: scaleX(0);
  transform-origin: left center;
  background: var(--green);
  border-radius: 3px;
  transition: transform 0.3s ease-out;
}
.level-item {
  display: grid;
  grid-template-columns: 2rem 1fr auto;
  align-items: center;
  gap: 0.6rem;
  padding: 0.65rem 0.8rem;
  background: var(--bg-2);
  border: 1px solid var(--rule);
  color: var(--ink);
  text-decoration: none;
  border-radius: 6px;
  transition: 0.15s ease;
}
.level-item:hover {
  border-color: var(--cyan);
  background: var(--panel-2);
  transform: translateX(2px);
}
.level-item.current {
  border-color: var(--cyan);
  background: rgba(0, 229, 255, 0.08);
  box-shadow: inset 0 0 18px rgba(0, 229, 255, 0.1), 0 0 12px rgba(0, 229, 255, 0.1);
}
.level-item.current .level-index {
  color: var(--cyan);
  border-color: var(--cyan);
}
.level-item .level-index {
  font-family: var(--font-display);
  font-size: 0.7rem;
  color: var(--faint);
  text-align: center;
  border: 1px solid var(--rule);
  border-radius: 4px;
  padding: 0.15rem 0;
}
.level-item .level-name {
  font-weight: 600;
  font-size: 0.92rem;
}
.level-item .level-district {
  font-size: 0.65rem;
  color: var(--faint);
  font-family: var(--font-display);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.level-item.completed {
  border-color: rgba(46, 204, 113, 0.45);
  background: rgba(46, 204, 113, 0.06);
}
.level-item.completed .level-name::after {
  content: ' ✓';
  color: var(--green);
  font-weight: 700;
}
.level-item.locked {
  cursor: not-allowed;
  color: var(--faint);
  background: #0b0d11;
  border-color: #222630;
}
.level-item.locked:hover { transform: none; border-color: #222630; background: #0b0d11; }
.level-item.locked .level-index { color: transparent; position: relative; }
.level-item.locked .level-index::after { content: ""; position: absolute; left: 50%; top: 50%; width: .55rem; height: .5rem; border: 1px solid var(--faint); transform: translate(-50%,-35%); }
.level-item.locked .level-index::before { content: ""; position: absolute; left: 50%; top: .15rem; width: .38rem; height: .38rem; border: 1px solid var(--faint); border-bottom: 0; border-radius: .4rem .4rem 0 0; transform: translateX(-50%); }
.close-modal {
  width: 100%;
  padding: 0.65rem;
  background: transparent;
  border: 1px solid var(--rule-2);
  color: var(--ink-2);
  cursor: pointer;
  font-family: var(--font-display);
  border-radius: 4px;
  transition: 0.15s ease;
}
.close-modal:hover { border-color: var(--cyan); color: var(--cyan); background: rgba(0, 229, 255, 0.05); }

/* Help button */
.help-btn {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--cyan);
  background: transparent;
  border: 1px solid var(--rule);
  border-radius: 50%;
  cursor: pointer;
  transition: 0.15s ease;
}
.help-btn:hover {
  border-color: var(--cyan);
  background: rgba(0, 229, 255, 0.08);
  box-shadow: 0 0 14px rgba(0, 229, 255, 0.18);
}

/* Help modal */
.help-modal {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.8);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 200;
  opacity: 0;
  pointer-events: none;
  transition: 0.25s ease;
}
.help-modal.show {
  opacity: 1;
  pointer-events: auto;
}
.help-box {
  background: var(--panel);
  border: 1px solid var(--cyan);
  border-radius: 10px;
  padding: 1.5rem;
  width: min(92%, 560px);
  max-height: min(90vh, 640px);
  display: flex;
  flex-direction: column;
  box-shadow: 0 0 50px rgba(0, 229, 255, 0.22);
}
.help-box h2 {
  margin: 0 0 1rem;
  font-family: var(--font-display);
  color: var(--cyan);
  text-shadow: 0 0 14px rgba(0, 229, 255, 0.2);
}
.help-tabs {
  display: flex;
  gap: 0.4rem;
  margin-bottom: 1rem;
  border-bottom: 1px solid var(--rule);
  padding-bottom: 0.5rem;
}
.help-tab {
  padding: 0.4rem 0.8rem;
  background: transparent;
  border: 1px solid transparent;
  color: var(--ink-2);
  font-family: var(--font-display);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  border-radius: 4px;
  cursor: pointer;
  transition: 0.15s ease;
}
.help-tab:hover { color: var(--cyan); }
.help-tab.active {
  color: var(--cyan);
  border-color: var(--cyan);
  background: rgba(0, 229, 255, 0.06);
}
.help-panel {
  display: none;
  overflow-y: auto;
  margin-bottom: 1rem;
}
.help-panel.active { display: block; }
.help-grid {
  display: grid;
  gap: 0.6rem;
}
.help-row {
  display: grid;
  grid-template-columns: minmax(2rem, auto) 1fr;
  gap: 0.75rem;
  align-items: baseline;
  padding: 0.55rem 0.7rem;
  background: var(--bg-2);
  border: 1px solid var(--rule);
  border-radius: 6px;
}
.help-row code {
  font-family: var(--font-display);
  color: var(--cyan);
  font-size: 0.85rem;
}
.help-row kbd {
  font-family: var(--font-display);
  color: var(--cyan);
  font-size: 0.8rem;
  background: var(--bg-3);
  border: 1px solid var(--rule-2);
  border-radius: 4px;
  padding: 0.1rem 0.35rem;
}
.help-row span { color: var(--ink-2); font-size: 0.9rem; }
.help-row .help-icon {
  width: 1.6rem;
  text-align: center;
  font-size: 1rem;
  color: var(--ink);
  flex-shrink: 0;
}
.help-list {
  margin: 0;
  padding-left: 1.2rem;
  color: var(--ink-2);
  display: grid;
  gap: 0.6rem;
}
.help-list li { line-height: 1.5; }
.help-list strong { color: var(--ink); }
.help-actions {
  display: flex;
  gap: 0.75rem;
  justify-content: space-between;
  margin-top: auto;
}
.help-action {
  padding: 0.6rem 1rem;
  background: var(--cyan);
  color: #000;
  border: none;
  border-radius: 4px;
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  cursor: pointer;
  transition: 0.15s ease;
}
.help-action:hover { background: #7ff8ff; }

/* Tutorial overlay */
.district-arrival {
  position: fixed;
  inset: 0;
  z-index: 260;
  display: grid;
  grid-template-columns: minmax(0, 1.65fr) minmax(22rem, .75fr);
  background: #05080c;
  color: var(--ink);
}
.district-arrival[hidden] { display: none; }
.district-arrival-art {
  min-height: 100vh;
  background-color: #071012;
  background-size: cover;
  background-position: center;
}
.district-arrival-copy {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: clamp(2rem, 5vw, 5rem);
  border-left: 1px solid var(--rule-2);
  background: linear-gradient(140deg, var(--panel), #090c11);
}
.district-call-sign {
  margin: 0 0 1rem;
  color: var(--orange);
  font: 700 .7rem var(--font-display);
  letter-spacing: .16em;
  text-transform: uppercase;
}
.district-arrival h2 {
  max-width: 10ch;
  margin: 0 0 1.25rem;
  color: var(--ink);
  font: 800 clamp(2.5rem, 5vw, 5.4rem)/.95 var(--font-body);
  letter-spacing: -.045em;
}
.district-arrival-copy > p:not(.district-call-sign) {
  max-width: 42ch;
  color: var(--ink-2);
  font-size: 1.05rem;
}
.district-objective {
  display: grid;
  gap: .35rem;
  margin: 1.5rem 0 2rem;
  padding: 1rem 0;
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
}
.district-objective span { color: var(--orange); font: 700 .65rem var(--font-display); letter-spacing: .12em; text-transform: uppercase; }
.district-objective strong { max-width: 38ch; font-size: .95rem; }
#district-arrival-continue {
  align-self: flex-start;
  min-height: 48px;
  padding: .8rem 1.1rem;
  border: 1px solid var(--cyan);
  background: var(--cyan);
  color: #001114;
  font-weight: 800;
  cursor: pointer;
}
#district-arrival-skip {
  align-self: flex-start;
  margin-top: .8rem;
  padding: .5rem 0;
  border: 0;
  border-bottom: 1px solid transparent;
  background: transparent;
  color: var(--ink-2);
  cursor: pointer;
}
#district-arrival-skip:hover { color: var(--ink); border-bottom-color: var(--ink-2); }
#district-arrival-continue:focus-visible, #district-arrival-skip:focus-visible { outline: 3px solid var(--orange); outline-offset: 4px; }
.tutorial-overlay {
  position: fixed;
  inset: 0;
  z-index: 250;
  opacity: 0;
  pointer-events: none;
  transition: 0.3s ease;
}
.tutorial-overlay.show {
  opacity: 1;
  pointer-events: auto;
}
.tutorial-spotlight {
  position: absolute;
  border-radius: 8px;
  box-shadow: 0 0 0 9999px rgba(0, 0, 0, 0.82), 0 0 24px rgba(0, 229, 255, 0.45);
  border: 2px solid var(--cyan);
  transition: 0.35s ease;
  pointer-events: none;
}
.tutorial-card {
  position: absolute;
  left: 50%;
  bottom: 2rem;
  transform: translateX(-50%);
  width: min(92%, 420px);
  background: var(--panel);
  border: 1px solid var(--cyan);
  border-radius: 10px;
  padding: 1.2rem;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.5), 0 0 30px rgba(0, 229, 255, 0.15);
}
.tutorial-card h3 {
  margin: 0 0 0.4rem;
  font-family: var(--font-display);
  color: var(--cyan);
}
.tutorial-card p {
  margin: 0 0 1rem;
  color: var(--ink-2);
  line-height: 1.5;
}
.tutorial-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.tutorial-step {
  font-family: var(--font-display);
  font-size: 0.75rem;
  color: var(--faint);
}
.tutorial-btn {
  padding: 0.45rem 0.9rem;
  background: var(--cyan);
  color: #000;
  border: none;
  border-radius: 4px;
  font-family: var(--font-display);
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  cursor: pointer;
  transition: 0.15s ease;
}
.tutorial-btn:hover { background: #7ff8ff; }
.tutorial-btn.secondary {
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--rule-2);
}
.tutorial-btn.secondary:hover { border-color: var(--cyan); color: var(--cyan); }

@media (max-width: 1180px) {
  .game-main { grid-template-columns: 1fr; grid-template-rows: 52vh minmax(0, 1fr); grid-template-areas: "stage" "terminal"; }
  .stage-wrap { border-left: none; border-bottom: 1px solid var(--rule); }
}
.mode-switch { display: flex; gap: 0.25rem; }
.mode-btn {
  background: var(--bg-3);
  border: 1px solid var(--rule);
  color: var(--ink-2);
  padding: 0.35rem 0.7rem;
  font-family: var(--font-display);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  border-radius: 4px;
  cursor: pointer;
}
.mode-btn.active, .mode-btn:hover { border-color: var(--cyan); color: var(--cyan); }

.plc-io-panel {
  display: flex;
  gap: 1rem;
  padding: 0.55rem 0.7rem;
  background: rgba(4, 28, 31, 0.94);
  border: 1px solid var(--cyan);
  border-radius: 6px;
  font-size: 0.75rem;
  color: var(--ink);
}
.plc-io-panel[hidden], .plc-io-panel[style*="display:none"] { display: none; }
.plc-io-group { flex: 1; }
.plc-io-group strong {
  display: block;
  font-family: var(--font-display);
  font-size: 0.6rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--orange);
  margin-bottom: 0.35rem;
}
.plc-io-list { display: flex; gap: 0.4rem; flex-wrap: wrap; }
.plc-io-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.15rem 0.4rem;
  background: var(--bg-3);
  border: 1px solid var(--rule);
  border-radius: 4px;
  font-family: var(--font-display);
}
.plc-io-chip.on { border-color: var(--green); color: var(--green); box-shadow: 0 0 8px rgba(46, 204, 113, 0.12); }
.plc-io-chip.off { color: var(--faint); }
.plc-io-chip::before { content: ''; width: 6px; height: 6px; border-radius: 50%; background: currentColor; }
.plc-io-status { display: flex; align-items: center; justify-content: center; padding-left: 0.5rem; border-left: 1px solid var(--rule); }
.plc-status-badge { font-family: var(--font-display); font-size: 0.6rem; letter-spacing: 0.08em; font-weight: 700; padding: 0.2rem 0.45rem; border-radius: 4px; border: 1px solid var(--rule); }
.plc-status-badge.running { color: var(--green); border-color: var(--green); background: rgba(46, 204, 113, 0.08); }
.plc-status-badge.stopped { color: var(--faint); border-color: var(--rule); }

.plc-editor {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  padding: 0.4rem;
  background: var(--bg-2);
  border: 1px solid var(--rule-2);
  border-radius: 0 6px 6px 6px;
  min-height: 0;
  flex: 1;
  overflow-y: auto;
}
.plc-rail { display: flex; flex-direction: column; gap: 0.5rem; }
.plc-rung {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  min-height: 48px;
  background: var(--bg);
  border: 1px solid var(--rule);
  border-radius: 4px;
  padding: 0.4rem;
}
.plc-rail-line {
  width: 4px;
  align-self: stretch;
  background: var(--cyan-dim);
  border-radius: 2px;
}
.plc-cell {
  position: relative;
  min-width: 74px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px dashed var(--rule-2);
  border-radius: 4px;
  cursor: pointer;
  font-family: var(--font-display);
  font-size: 0.75rem;
  color: var(--ink);
}
.plc-cell:hover { border-color: var(--cyan); }
.plc-contact.no::before { content: '—] ['; color: var(--cyan); }
.plc-contact.nc::before { content: '—]/['; color: var(--orange); }
.plc-coil::before { content: '—( )'; color: var(--green); }
.plc-timer::before { content: 'TON'; color: var(--gold); }
.plc-counter::before { content: 'CTU'; color: var(--orange); }
.plc-reset::before { content: 'RES'; color: var(--red); }
.plc-array::before { content: 'ARR'; color: var(--cyan); }
.plc-subroutine::before { content: 'JSR'; color: var(--green); }
.plc-tag { position: absolute; top: -8px; left: 2px; font-size: 0.6rem; color: var(--ink-2); background: var(--bg); padding: 0 2px; white-space: nowrap; }
.plc-preset { position: absolute; bottom: -8px; left: 2px; right: 2px; font-size: 0.55rem; color: var(--faint); background: var(--bg); padding: 0 2px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; text-align: center; }
.plc-delete {
  position: absolute;
  top: -6px;
  right: -6px;
  width: 16px;
  height: 16px;
  line-height: 14px;
  padding: 0;
  border: 0;
  background: var(--danger);
  color: #fff;
  border-radius: 50%;
  font-size: 0.65rem;
  cursor: pointer;
  opacity: 0;
  transition: opacity 0.15s;
}
.plc-cell:hover .plc-delete { opacity: 1; }
.plc-cell.dragging { opacity: 0.5; }
.plc-cell.drop-target,
.plc-rail-line.drop-target {
  outline: 2px dashed var(--cyan);
  outline-offset: 2px;
  background: rgba(0, 229, 255, 0.08);
}
.plc-rail-line.drop-target {
  background: var(--cyan);
}
.plc-tool {
  cursor: grab;
}
.plc-tool:active {
  cursor: grabbing;
}

.plc-palette {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.plc-palette-group {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}
.plc-palette-label {
  font-family: var(--font-display);
  font-size: 0.6rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--faint);
  padding-left: 0.1rem;
}
.plc-palette-tools {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}
.plc-tool {
  background: var(--panel);
  border: 1px solid var(--rule);
  color: var(--ink);
  padding: 0.35rem 0.6rem;
  font-family: var(--font-display);
  font-size: 0.72rem;
  border-radius: 4px;
  cursor: pointer;
  transition: 0.12s ease;
}
.plc-tool:hover {
  border-color: var(--cyan);
  color: var(--cyan);
  background: rgba(0, 229, 255, 0.06);
  box-shadow: 0 0 10px rgba(0, 229, 255, 0.1);
}
.plc-tool:active { transform: translateY(1px); }

.plc-editor-actions {
  display: flex;
  gap: 0.5rem;
  padding-top: 0.4rem;
  border-top: 1px solid var(--rule);
}
.plc-reset-btn {
  padding: 0.35rem 0.65rem;
  background: transparent;
  border: 1px solid var(--rule-2);
  color: var(--ink-2);
  font-family: var(--font-display);
  font-size: 0.68rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  border-radius: 4px;
  cursor: pointer;
  transition: 0.15s ease;
}
.plc-reset-btn:hover { border-color: var(--danger); color: var(--danger); background: rgba(255, 56, 100, 0.06); }
.plc-reset-btn:focus-visible { outline: 2px solid var(--danger); outline-offset: 2px; }
.plc-copy-btn {
  padding: 0.35rem 0.65rem;
  background: transparent;
  border: 1px solid var(--rule-2);
  color: var(--ink-2);
  font-family: var(--font-display);
  font-size: 0.68rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  border-radius: 4px;
  cursor: pointer;
  transition: 0.15s ease;
}
.plc-copy-btn:hover { border-color: var(--cyan); color: var(--cyan); background: rgba(0, 229, 255, 0.06); }
.plc-copy-btn:focus-visible { outline: 2px solid var(--cyan); outline-offset: 2px; }

.plc-tags {
  font-size: 0.75rem;
  color: var(--ink-2);
  border-top: 1px solid var(--rule);
  padding-top: 0.5rem;
}
.plc-tag-list { display: flex; gap: 0.4rem; flex-wrap: wrap; margin-top: 0.3rem; }
.plc-tag-chip {
  background: var(--bg-3);
  border: 1px solid var(--rule);
  padding: 0.15rem 0.4rem;
  border-radius: 4px;
  font-size: 0.68rem;
}
.plc-live-badge {
  display: inline-block;
  margin-left: 0.35rem;
  padding: 0.05rem 0.3rem;
  border-radius: 3px;
  font-family: var(--font-display);
  font-size: 0.58rem;
  font-weight: 700;
  letter-spacing: 0.04em;
}
.plc-live-badge.on { color: #001114; background: var(--green); }
.plc-live-badge.off { color: var(--ink-2); background: var(--bg); border: 1px solid var(--rule); }
.plc-live-badge.value { color: var(--cyan); background: rgba(0, 229, 255, 0.08); border: 1px solid rgba(0, 229, 255, 0.25); }

/* Python Lab editor */
.python-lab-editor {
  display: flex;
  flex-direction: column;
  flex: 1;
  min-height: 0;
  border: 1px solid var(--rule);
  border-radius: 8px;
  overflow: hidden;
}
.lab-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0.45rem 0.7rem;
  background: var(--bg-3);
  border-bottom: 1px solid var(--rule);
  font-size: 0.75rem;
}
.lab-status {
  color: var(--faint);
  font-size: 0.7rem;
}
.lab-code {
  flex: 1;
  min-height: 0;
  padding: 0.9rem;
  background: var(--bg);
  color: var(--ink);
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 0.9rem;
  line-height: 1.55;
  border: none;
  outline: none;
  resize: none;
  white-space: pre;
  overflow: auto;
  tab-size: 4;
}

@media (max-width: 600px) {
  .game-header { padding: 0.45rem 0.7rem; gap: 0.5rem; }
  .logo { font-size: 1.1rem; }
  .logo small { letter-spacing: 0.2em; }
  .levels-btn, .back { padding: 0.3rem 0.55rem; font-size: 0.62rem; }
  .level-info { display: none; }
  .game-main { grid-template-columns: 1fr; grid-template-rows: 42vh minmax(0, 1fr); grid-template-areas: "stage" "terminal"; }
  .stage-wrap { border-left: none; border-bottom: 1px solid var(--rule); }
  .goal-strip { padding: 0.6rem 0.85rem 0.4rem; gap: 0.45rem; }
  .goal-strip p { font-size: 0.9rem; }
  .editor-card { padding: 0.4rem 0.85rem 0.8rem; gap: 0.6rem; }
  .editor { padding: 0.75rem 0.8rem 0.75rem 2.4rem; font-size: 0.92rem; line-height: 1.55; }
  .line-numbers { width: 1.9rem; padding-right: 0.35rem; font-size: 0.92rem; line-height: 1.55; top: 0.75rem; bottom: 0.75rem; }
  .code-input { min-width: 70px; font-size: 0.92rem; }
  .output { min-height: 36px; padding: 0.4rem 0.65rem 0.4rem 1.8rem; font-size: 0.8rem; }
  .output::before { left: 0.65rem; top: 0.4rem; }
  .hint-line { padding: 0.45rem 0.65rem; font-size: 0.82rem; }
  .dialogue-card { left: 0.5rem; right: 0.5rem; bottom: 0.5rem; max-width: none; padding: 0.6rem 0.75rem; }
  .dialogue-avatar { width: 38px; height: 38px; }
  .win-box { padding: 1.5rem 1rem; margin: 1rem; }
  .help-box { padding: 1rem; width: min(96%, 560px); }
  .help-tabs { flex-wrap: wrap; gap: 0.3rem; }
  .help-tab { padding: 0.35rem 0.6rem; font-size: 0.68rem; }
  .help-row { grid-template-columns: 1fr; gap: 0.25rem; padding: 0.45rem 0.6rem; }
  .help-actions { flex-direction: column; gap: 0.5rem; }
  .tutorial-card { bottom: 0.75rem; width: min(94%, 420px); padding: 1rem; }
  .district-arrival { grid-template-columns: 1fr; grid-template-rows: 34vh 1fr; overflow-y: auto; }
  .district-arrival-art { min-height: 34vh; background-position: 38% center; }
  .district-arrival-copy { justify-content: flex-start; padding: 1.5rem; border-left: 0; border-top: 1px solid var(--rule-2); }
  .district-arrival h2 { font-size: 2.5rem; }
  .plc-cell { min-width: 62px; height: 34px; font-size: 0.68rem; }
  .plc-tool { padding: 0.3rem 0.5rem; font-size: 0.68rem; }
}

/* Focus indicators and small-screen polish */
button:focus-visible,
a:focus-visible,
input:focus-visible,
textarea:focus-visible,
[tabindex]:not([tabindex="-1"]):focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

@media (max-width: 800px) and (min-height: 500px) {
  .game-main { grid-template-rows: 38vh minmax(0, 1fr); }
  .dialogue-card { bottom: 0.75rem; }
}

/* Auth gate overlay — shown on production when no Tenshin Arts session exists. */
.auth-gate-overlay {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  background: rgba(5, 6, 8, 0.92);
  backdrop-filter: blur(8px);
}
.auth-gate-overlay[hidden] { display: none; }
.auth-gate-box {
  width: min(420px, 100%);
  background: linear-gradient(180deg, var(--panel), var(--bg-2));
  border: 1px solid var(--cyan);
  border-radius: 10px;
  padding: 1.6rem 1.5rem 1.5rem;
  text-align: center;
  box-shadow: 0 0 60px rgba(0, 229, 255, 0.18), inset 0 0 24px rgba(0, 229, 255, 0.04);
}
.auth-gate-box h2 {
  margin: 0 0 0.5rem;
  font-family: var(--font-display);
  color: var(--cyan);
  font-size: 1.3rem;
}
.auth-gate-box p {
  margin: 0 0 1.2rem;
  color: var(--ink-2);
  font-size: 0.92rem;
  line-height: 1.5;
}
.auth-gate-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.7rem;
}
.auth-gate-primary,
.auth-gate-secondary {
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  text-decoration: none;
  padding: 0.6rem 1rem;
  border-radius: 5px;
  cursor: pointer;
  transition: 0.15s ease;
  border: none;
}
.auth-gate-primary {
  background: var(--cyan);
  color: #000;
}
.auth-gate-primary:hover {
  background: #7ff8ff;
  box-shadow: 0 0 18px rgba(0, 229, 255, 0.35);
}
.auth-gate-secondary {
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--rule-2);
}
.auth-gate-secondary:hover {
  border-color: var(--cyan);
  color: var(--cyan);
  background: rgba(0, 229, 255, 0.06);
}
.auth-gate-secondary:disabled {
  opacity: 0.5;
  cursor: wait;
}
.auth-gate-debug {
  margin-top: 1rem;
  text-align: left;
  font-family: var(--font-display);
  font-size: 0.7rem;
  color: var(--ink-2);
  background: rgba(0, 0, 0, 0.35);
  border: 1px solid var(--rule);
  border-radius: 6px;
  padding: 0.75rem;
  max-height: 160px;
  overflow: auto;
  white-space: pre-wrap;
  word-break: break-word;
}
.auth-gate-debug:empty { display: none; }
.auth-gate-debug button {
  margin-bottom: 0.6rem;
  font-family: inherit;
  font-size: inherit;
  background: transparent;
  color: var(--cyan);
  border: 1px solid var(--cyan);
  border-radius: 4px;
  padding: 0.35rem 0.6rem;
  cursor: pointer;
}